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Finding the Fourth Proportional to 79,512, 119,267.68 and 61,994.72

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Solution

The fourth proportional to 79,512, 119,267.68 and 61,994.72 is: 92,991.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,512 : 119,267.68 = 61,994.72 : x
  2. Step 2: Convert to fraction form
    79,512/119,267.68 = 61,994.72/x
  3. Step 3: Cross multiply
    79,512x = 119,267.68 × 61,994.72
  4. Step 4: Simplify right side
    79,512x = 7,393,966,426.65
  5. Step 5: Solve for x
    x = 7,393,966,426.65/79,512
  6. Step 6: Final answer
    x = 92,991.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.